#!/bin/bash

# Slackware build script for OpenSceneGraph

# Written by Aleksandar Samardzic <asamardzic@gmail.com>
# Maintained by Jordan Evans <jordanevans19@gmail.com>
# Maintained 2018-2021 by Christoph Willing <chris.willing@linux.com>

cd $(dirname $0) ; CWD=$(pwd)

PRGNAM=OpenSceneGraph
VERSION=${VERSION:-3.6.5}
BUILD=${BUILD:-2}
TAG=${TAG:-_SBo}
PKGTYPE=${PKGTYPE:-tgz}

if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i586 ;;
    arm*) ARCH=arm ;;
       *) ARCH=$( uname -m ) ;;
  esac
fi

# If the variable PRINT_PACKAGE_NAME is set, then this script will report what
# the name of the created package would be, and then exit. This information
# could be useful to other scripts.
if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
  echo "$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE"
  exit 0
fi

TMP=${TMP:-/tmp/SBo}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

if [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

# Support OpenCASCADE, if installed
occ=""
# Not supported until version 3.5.6
#ls -l /var/log/packages/OpenCASCADE* 2>/dev/null 1>/dev/null
#[ $? -eq 0 ] && occ="-DOPENCASCADE_INCLUDE_DIR=/opt/OpenCASCADE/inc -DOPENCASCADE_LIBRARY_TYPE=Shared"

set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$PRGNAM-$VERSION
tar xf $CWD/$PRGNAM-$PRGNAM-$VERSION.tar.gz
cd $PRGNAM-$PRGNAM-$VERSION
chown -R root:root .
find -L . \
 \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 \
  -o -perm 511 \) -exec chmod 755 {} \+ -o \
 \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
  -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \+

# 20220215 bkw: asio is an optional, auto-detected dependency. Our
# version of asio is either too new or too old for this. Note
# that this is Asio (the network library for C++), not
# ASIO (the Windows low-latency audio API) nor wineasio, nor
# /usr/include/boost/asio.hpp, whatever that even is. I don't see a
# way to disable asio support via a cmake variable, so it has to be
# surgery. Applying this patch disables the RestHttpDevice plugin,
# hope that's OK.
patch -p1 < $CWD/disable_asio.diff

mkdir -p build
cd build
  cmake .. \
    -DCMAKE_C_FLAGS:STRING="$SLKCFLAGS" \
    -DCMAKE_CXX_FLAGS:STRING="$SLKCFLAGS -std=c++11" \
    -DCMAKE_INSTALL_PREFIX=/usr \
    -DLIB_POSTFIX=$LIBDIRSUFFIX \
    -DCMAKE_BUILD_TYPE=Release \
    $occ \
    -DBUILD_OSG_EXAMPLES=ON \

  make
  make install DESTDIR=$PKG

  # No binaries in /usr/share. Move examples to /usr/bin
  mv $PKG/usr/share/OpenSceneGraph/bin/* $PKG/usr/bin/
  rm -rf $PKG/usr/share
cd ..

find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" | grep ELF \
  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a AUTHORS.txt ChangeLog LICENSE.txt NEWS.txt README* $PKG/usr/doc/$PRGNAM-$VERSION
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc

cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE
